Attachment for spring-beard knitting machines



May 13, 1930. P. G. PERKINS ATTACHMENT'FORSPRING BEARD KNITTING MACHINESFiled Oct. 10, 1928 2 Sheets-Sheet l m M W W26. WWW

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P. G. PERKINS ATTACHMENT FOR SPRING BEARD KNITTING MACHINES Filed Oct.10, 1928 2 Sheets-Sheet 2 awe/n ce;

Patented May 13, 1930 UNTE PAUL G. PERKINS, F SAUQUOIT, NEW YORKATTACHMENT FOR SPRING-BEARD KNITTING MACHINES Application filed October10, 1928.

My invention relates to an attachment for spring beard knitting machineand I declare the following to be a full, clear, concise and exactdescription thereof sufiicient to enable anyone skilled in the art towhich it appertains to make and use the same, reference being had to theaccompanying drawings in which like reference characters refer to likeparts throughout the specification.

The object of the invention is to provide an attachment for spring beardknitting machine that will allow the burr wheel, which feeds the yarn tothe needles, to yield in the event a needle becomes bent or otherwise 1defective or as when a slug or other defect in the yarn lodges in thebeard 0f the needle.

Such a yielding tendency on the part of the burr wheel will prevent theneedle being broken and thereby cause a defect in the knitted goods.

The object will be understood by referring to the drawings, in which:

Fig. 1 is a perspective view of the attachment shown in connection withthe pertinent parts of spring beard knitting machine.

Fig. 2 is an end elevation of the attachlnent.

Fig. 3 is a central vertical section of the attachment.

Fig. 4 is a perspective View of the attachment shown in connection withthe immediate parts of the spring beard knitting machine which is infragment.

Fig. 5 is a section taken on the line 5, 5 of 35 Fig. 4.

Refer-ring more particularly to the drawings, the cylinder of a springbeard knitting machine is shown at 5 and the spring beard needles at 6.The attachment embodies a bracket 10 having a sleeve 11 that is madeintegral therewith and disposed at right angles to the part 12 of thebracket. Part 13 of the bracket is at right angles to part 12 andintegral therewith. The free end of part 13 is bifurcated or is formedwith an open rectangular recess 15 within which is pivotally mounted at16 the rock member 17.

The lower part 18 of rock member 17 is cylindrical. It is reducedsomewhat at 19 and 50 again at 20. A head 21 is driven onto reducedSerial No. 311,687.

27 is wound about the shank of set bolt 30.

Set bolt 30 is screw threaded to adjustable collar 31 and projectstherethrough to engage the surface of adjustable arm 32, whereby to holdcollar 31 is predetermined position along the cylindrical part 33 ofadjustable arm 32. Coiled spring 27 will tend to rock member 17 on itspivot 16 by exerting a pull on the upper part 25 towards set bolt 30.Member 17 will be prevented from rocking past the full line positionillustrated in Fig.

1 by the end edge 40. of adjustable arm 32. The edge 40 of arm 32 whichhas a flat portion at 41 is adapted to abut against the lateral surfaceof rock member 17, whereby to arrest the swinging of member 17 on itspivot 16 therebeyond. Arm 82 is held in predetermined position by setscrew 45 and Washer 45 that projects through an elongated recess 43 madein the flat part 41 of arm 32 and is screw threaded to part 13 of thebracket 10. It will be observed, therefore, that rock member 17 willrotate in one direction only to allow burr wheel 24 to yield or moveinto dotted line position shown in Fig. 1 when a force is appliedthereto as when a bent needle comes in contact with the surface of theburr wheel 24 or when a slug 0r defect in the yarn gets caught in aneedle 6, rather than cause the breaking of the needle 6 as would happenif the burr wheel 24 was held rigidly in position without yielding.

I The attachment is held yieldingly in operative position, whereby burrwheel 24 will engage with needles 6 by a rod having a loose bearing inbracket 51 bolted to the frame 52 of the knitting machine at 53.vBearing 54 made in bracket 51 is an elongated aperture, whereby to allowfor the vertical. adjustment of rod 50, and, therefore, of theattachment. Rod 51 also projects through an aperturein adjustable block55' that is held to bracket 51 by bolt 56. Bolt 56 projects through saidelongated aperture 54 which is narrower from 57 downward to accommodatethe smaller diameter of bolt 56. Aperture 54 will allow bolt 56 to bemoved in a vertical manner, whereby to adjust the vertical position ofblock 55. Block 55 has formed integral therewith a hollow casing orsleeve 60 adapted to house a portion of rod 51 which extends through thecenter thereof and therebeyond through bushing 61, adjusting nut 62 andlock nut 63. Bushing 61 is held in given relation to sleeve 60 by setnut 65, which has a threaded bearing in the enlarged part 66 of sleeve60 and is adapted to engage the flat surface of the reduced forward part67 of bushing 61. Said part 67 is substantially rectangular in crosssection. The aperture made in bushing 61 for the projection of rod 51 issufficiently large to clear the surface of said rod 51. The inner end ofbushing 61 forms a shoulder against which one end of coiled spring 70rests. The opposite end of coiled spring 70, which surrounds a part ofrod 51, rests against collar 71 fastened to or made integral with rod51, whereby the force of coiled spring 70 will tend to push rod 51 tothe right. This direction of rod 51 will cause the attachment to holdburr wheel 24 in contact with the needles 6. The position of burr wheel24 with reference to needles 6 can be controlled by manipulatingadjusting nut 62 and lock nut 63.

The usual well known wheel for pressing the cloth as it comes from theneedles 6 down ward is represented at 80 and has a hollow sleeve 8O madeintegral therewith and adapted to turn on a shaft 81 formed as part ofadjustable bracket 82. The end of bracket 82 is bent at right angles at82A and held to bracket 51 by bolt 83 projecting through elongatedaperture 84 in bracket 51, whereby to allow for vertical adjustment.Hollow sleeve 80 is held to shaft 81 by washer 85 and screw bolt 86. Theusual well known arn uide is shown at 87.

In operation the arm 32 will be set to given position, whereby to limitthe throw or rotation of member 17 and likewise the tension of coiledspring 27 will be adjusted to given tension. Yarn 88 is carried by burrwheel 24 and is forced up into the spring beard 89 of needles 6 as saidneedles 6 move therepast on the rotatable cylinder 5 of the knittingmachine. In moving past burr wheel 24 the beard part 89 of needles 6will move between the burrs 90 of burr wheel 24 as is usual in knittingmachines of this type. However, should a needle become bent so as not totake its normal course through the burrs 90 of wheel 24 but on the otherhand come in contact with the outer edges of burr wheel 24 said burrwheel 24 will yield rather than break said needle with the resultantdefect caused in the cloth. A. broken needle will cause a flax in theknitted clot-h. F urthermore, the breaking of one needle is liable tocause the breaking of successive needles as they come in contact withsaid burr wheel 24, all of which will be prevented by the yielding burrwheel 24. Moreover, should a slug or defect in the yarn 88 clog in thebeards 89 of needles 6 and get caught in the burrs 90 of wheel 24, saidwheel 24 will yield as in the former case with a bent needle 6 ratherthan break the needle 6.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is as follows:

1. In an attachment for spring beard knitting machines, a yieldingmounted bracket having a bifurcated end, a rock member pivotedlysupported at said end, a burr wheel mounted to slide on said rockmember, an arm mounted on said bracket and having a slot therein, ascrew bolt projecting through said slot to hold said arm to said bracketin an adjustable manner, a spring connecting said rock member with saidarm, and said arm adapted to hold said rock member against the tensionof said spring.

2. In an attachment for spring beard knitting machines, a bracket, arock member pivotedly supported by said bracket, a burr wheel carried bysaid rock member, an adjustable arm adapted to make contact with saidrock member, whereby to limit the movable arc of said rock member and aspring connecting with said rock member and with a collar mounted onsaid adjustable arm, whereby to hold said rock member in predeterminedposition.

3. In an attachment for spring beard knitting machines, a bracket havinga bifurcated end, a rock member pivotedly supported at said end, a burrwheel mounted on said rock member, an adjustable arm mounted on saidbracket, a spring connecting said rock member with a collar mounted onsaid adjustable arm, and said adjustable arm adapted to make contactwith said rock member whereby to hold it against the tension of saidspring.

In testimony whereof I have aflixed my signature.

PAUL G. PERKINS.

